AD 72-18-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 35 | Airworthiness Directives; BEECH Models 35, A35, B35 and C35 Airplanes |
| aircraft | Textron Aviation Inc. | A35 | Airworthiness Directives; BEECH Models 35, A35, B35 and C35 Airplanes |
| aircraft | Textron Aviation Inc. | B35 | Airworthiness Directives; BEECH Models 35, A35, B35 and C35 Airplanes |
| aircraft | Textron Aviation Inc. | C35 | Airworthiness Directives; BEECH Models 35, A35, B35 and C35 Airplanes |
Unsafe Condition
Dimming of the fuel selector valve disengagement warning light could occur, which may reduce its visibility to the flight crew.
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Required Actions
Adjust the dimming lens to maximum brightness immediately. Within 25 hours' time in service after August 29, 1972, replace MS 25041-2 light indicator assembly with MS 25041-6 or replace its dimming lens with a non-dimming lens from MS 25041-6. Equivalent methods require FAA approval.
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Compliance Time
Effective immediately until Paragraph B has been accomplished. Paragraph B must be accomplished within 25 hours' time in service after August 29, 1972.
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Affected Aircraft
BEECH Models 35, A35, B35, and C35 airplanes with serial numbers D-1 through D-2900, modified by Beech Kit No. 35-5030S (serial numbers 100 through 989) or equivalent installations using a warning light with a dimming feature.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel Selector Valve Warning Light
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_72-18-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 72-18-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BEECH Models 35, A35, B35 and C35 Airplanes Subject: Fuel Selector Valve Warning Light Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/29/1972 Make: Textron Aviation Inc. Model: 35 | A35 | B35 | C35 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 72-18-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1505 AD NUMBER: 72-18-01 SUBJECT HEADING: Airworthiness Directives; BEECH Models 35, A35, B35 and C35 Airplanes ACTION: SUMMARY: DATES: Effective August 29, 1972. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 72-18-01 BEECH: Amdt. 39-1505. Applies to Models 35, A35, B35 and C35 airplanes (Serial Numbers D-1 through D-2900) with a P/N 35-924065 fuel unit modified by the installation of Beech Kit No. 35-5030S (Serial Numbers 100 through 989) or any equivalent installation using a warning light with a dimming feature. (NOTE: Installation of either Beech Kit No. 35-5030S or P/N 35-924230 fuel unit is required by AD 69-18-01.) To prevent dimming of fuel selector valve disengagement warning light, unless already accomplished, accomplish the following: A) Effective immediately until Paragraph B has been accomplished, adjust the dimming lens on the fuel selector valve disengagement warning light to maximum bright. B) Within the next 25 hours' time in service after the effective date of this AD, either replace MS 25041-2 light indicator assembly with MS 25041-6 light indicator assembly or replace the dimming lens assembly of the MS 25041-2 light assembly with the non-dimming lens assembly from an MS 25041-6 light assembly. Any equivalent method of compliance must be submitted to and approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective August 29, 1972. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_72-18-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 72-18-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BEECH Models 35, A35, B35 and C35 Airplanes Subject: Fuel Selector Valve Warning Light Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/29/1972 Make: Textron Aviation Inc. Model: 35 | A35 | B35 | C35 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 72-18-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1505 AD NUMBER: 72-18-01 SUBJECT HEADING: Airworthiness Directives; BEECH Models 35, A35, B35 and C35 Airplanes ACTION: SUMMARY: DATES: Effective August 29, 1972. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 72-18-01 BEECH: Amdt. 39-1505. Applies to Models 35, A35, B35 and C35 airplanes (Serial Numbers D-1 through D-2900) with a P/N 35-924065 fuel unit modified by the installation of Beech Kit No. 35-5030S (Serial Numbers 100 through 989) or any equivalent installation using a warning light with a dimming feature. (NOTE: Installation of either Beech Kit No. 35-5030S or P/N 35-924230 fuel unit is required by AD 69-18-01.) To prevent dimming of fuel selector valve disengagement warning light, unless already accomplished, accomplish the following: A) Effective immediately until Paragraph B has been accomplished, adjust the dimming lens on the fuel selector valve disengagement warning light to maximum bright. B) Within the next 25 hours' time in service after the effective date of this AD, either replace MS 25041-2 light indicator assembly with MS 25041-6 light indicator assembly or replace the dimming lens assembly of the MS 25041-2 light assembly with the non-dimming lens assembly from an MS 25041-6 light assembly. Any equivalent method of compliance must be submitted to and approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective August 29, 1972. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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